Attachment for elevating graders



Jan. ll, 1938. E. o. JOHNSON ATTACHMENT FOR ELEVATING GRADERS sheets-sheet Filed May 14, 1937 nventor 250. %bmw/7 w& m m A Attorneys Jan. .11, 1938.

Eo. JOHNSON ATTACHMENT FOR ELEVATING GRADERS 3 Sheets-Sheet 3 Filed May 14, 1937 Irwentor 4 E O. %mwa/7 By mn..

Atomeys Patented Jan. 11, 1938 UNITED STATES PATENT OFFICE one-third to 'Henry N. Dak.

T. Quanbeck, McVille,

Application May 14, 1937, Serial No. 142,'706

7 'Claims.

This invention relates broadly to .excavating or digging machines and especially to what is known in the art .as an elevating grader.

More particularly the invention is an attachment for an elevating grader of the type having the elevator arranged transversely thereof to discharge from one side of the machine, and which is further characterized by the provision of a disk arranged to throw the dirt upon the elevator or carrier.

The attachment per se, in accordance with the -present invention, is of such a nature as to be readily applied at the receiving or lower end of .the elevator between one side of the disk and the rear side of the elevator whereby to prevent dirt, once thrown by the disk onto the elevator from falling therefrom back into the ditch.

In connection with the above it may be eX- plained .that in the type of grader above referred to there is .a space between the disk and the rear side of the elevatorthrough which very often dirt,- particularly ,dry dirt or sand passes from the lower-endnof the elevator back to the ditch, the return of the dirt to the ditch in this manner being -objectionable for obvious reasons.

It is, therefore, a salient object of the present invention to provide for the retention of the dirt on the elevator after once being thrown thereon through- .the action of the disk; and the invention together with its objects and advantages will be best understood from a study of the following description .taken in connection with the accompa nying drawings, .wherein Figure 1 is an elevational View illustrating the application of the invention to the elevating grader.

:Figura 2 'is a horizontal sectional View taken substantiallycon the line 2-.-2 of Figure 1.

Figure ,3 is an elevational View of the attach- 40' ment per se. I i

Figure 4 is an inside elevational view of the attachment.

Figure 5 .is a vertical sectional view through the attachment.

Figure '6 is a plan view of the shield forming part of the attachment.

Figure 7 is an elevational view of one of the flexible shield elements. i

Figure 8is a perspective viewof a second flexible shield element.

Referring to the drawings in detail it will be seen that I have illustrated only so much of an elevating road grader as is believed necessary for a ,complete understanding .of the invention. {I'hus it .will be seen that among other parts the elevating road grader embodies, at the bottom of the elevator, a shoe 5 arranged between the front side 6 and the rear side 1 of the elevator, the endless belt, and other associated parts of which are not shown. Further and as illustrated the machine includes a concaVo-convex disk 8 that is arranged in operative position to the shoe 5 of the elevator intermediate the sides 6 and 1 of the elevator for throwing the dirt onto the shoe 5 and consequently onto the bottom of the conveyor belt of the elevator. The disk 5 is supported in operative position to the shoe 5 through the medium of a suitable standard and associated parts indicated generally by the reference nu meral 9 as clearly shown in Figure 1.

The attachment per se, designed for preventing the return of dirt once thrown on the shoe 5 to the ditch through the space between the disk 8 and the rear side 'I of the elevator, is indicated generally by the reference numeral lo. i

In the preferred embodiment thereof the attachment per se comprises a metallic shield plate I I that is provided at the lower edge thereof with an attaching fiange !2, the plate l-I extending upwardly at an obtuse angle to the flange 12.

The fiange !2 is provided with slots [3 to accommodate blts I 4 through the medium of which flange |2 is bolted to the shoe 5 at the desired position of adjustment intermediate the disk 8 and the rear side l of the elevator as shown in Figure 2.

At the forward end thereof the edge of the fiange |2 is sharpened to a knife edge as at I 5 and serves to cut weeds or the like that may be in the path thereof.

The edge portion of the shield H adjacent to the disk 8 is bent outwardly at a suitable angle as at !6. A substantially rectangular flexiblc shield section |1 formed of suitable material, preferably of "belting material is provided for bridging the space between the rear end edge of the shield section ll and the rear side 'I of the elevator. Thus the flexible shield section 'I at one longitudinal edge thereof is bolted or otherwise u secured as at I8 to the inner side of the rigid shield section ll at the rear longitud'nal edge of the latter, and at the opposite longitudinal edge thereof said shield section ll is bolted or otherwise secured to the inner side of the rear 50 side 'I of the elevator as at !9. As shown the shield section ll extends upwardly between the shield section ll and the rear side 'I of the elevator from the shoe 5 and will serve to prevent dirt falling back 'into the ditch from the shoe 5 between the rear end of the shield I i and the rear side 'I of the elevator.

A flexible shield section 20 also of flexible material, preferably of "belting" material and of suitable edge Outline is provided for preventing dirt droppng back into the ditch from the shoe 5 between the disk 8 and the forward edge of the rigid shield section Il. The flexible shield section 20 at one edge thereof is Secured to the forward end of the shield section Il through the medium of suitably positioned bolts or other similar fastening elements 2I, while the free portion of the shield 28 bears against the rear or convex face of the disk 8 as shown in Figure 2. V

For yieldably retaining the shield section 28 against the disk 8 there is provided a spring arm 22 which intermediate its end is pivoted to the right shield ll as at 23.

One end of the arm 22 is curved'and bears against the shield 20 in a manner clearly shown in Figure 2 while at the opposite end thereof the arm 22 is connected with one end of a spring 24 that at its opposite end is suitably anchored through the medium of one of the fastening bolts !8. The spring 24 tends to normally urge the arm 22 to swing vertically upwardly or in a clockwise direction whereupon the angularly disposed free end of the arm 22 will serve admirably for releasably retaining the extended part of the shield 20 in yielding hearing contact with the disk 8.

It will thus be seen that while the shield 20 will serve to prevent the dirt dropping back into the ditch from the shoe 5 between the forward edge of the shield section ll and the disk 8 said shield 20 will yield to the pressure of rocks or the like so that the same may fall back into the ditch between the forward edge of the shield' ll and the disk 8 and not become clogged in the space between said forward edge of the shield II and the disk 8.

In connection with the above it will be understood that it is more preferable to have a flexible shield section such as the shield section 20 bearing against the disk 8 than it would be to have an integral extension of the shield 20 hearing against the disk 8 in which latter instance there would be the frictional contact of metal against metal resulting in a constant wear on the convex surface of the disk 8 which is undesirable for obvious reasons.

From the foregoing it will be seen that with my attachment applied in the manner illustrated and herein described to an elevating road grader the dirt once thrown by the disk onto the intake end of the traveling elevator or conveyor will be retained thereon with the result that the ditch digging operation may be performed more expeditiously and will not require constant repetition as is otherwise required in order to remove such dirt which, once deposited on the elevator returns to the ditch falling from the elevator through the space between the rear side of the elevator and the disk employed for throwing the dirt onto the elevator.

Having thus described the invention what is claimed as new is:-

1. An attachment for a road elevating grader of the type embodying a laterally disposed conveyor element having front and rear side walls, a shoe extending between said front and rear side walls at the lower end of the elevator and a disk positioned in operative position relative to said shoe intermediate the front and rear walls of the elevator and arranged to throw dirt onto the shoe and lower end of the elevator; said attachment comprising a shield mounted on said shoe and extending upwardly from the shoe and also from the rear side of the disk to the rear side wall of the elevator and serving to prevent the passage of dirt from the shoe through the space normally presented between the disk and the rear side of the elevator. I

2. An attachment for a road elevating grader of the type embodying a laterally disposed conveyor element having front and rear side walls, a shoe extending between said front and rear side walls at the lower end of the elevator and a disk positioned in operative position relative to said shoe intermediate the front and rear walls of the elevator andarranged to throw dirt onto the shoe and lower end of the elevator; said attachment comprising a shield mounted on said shoe and extending upwardly from the shoe and also from the rear side of the disk to the rear side wall of the elevator and serving to prevent the passage of dirt from the shoe through the space normally presented between the disk and the rear side of the elevator, said shield including a rigid intermediate shield section, a flexible shield section Secured at one end to one end of the rigid shield section and at the relatively opposite end to the rear side of said elevator, and a second fiexibleshield section secured at ,one edge thereof to the forward edge portion of the rigid shield section and having a free edge portion in hearing contact with the rear face of said disk.

3. An attachment for a road elevating grader of the type embodying a laterally disposed conveyor element having front and rear sidewalls, a shoe extending between said front and rear side walls at the lower end of the elevator and a disk positioned in operative position relative to said shoe intermediate the front and rear walls of the elevator and arranged to throw dirt onto the shoe and lower end of the elevator; said attachment comprising a shield mounted on said shoe and extending upwardly from the shoe and also from the rear side of the disk to the rear' side wall of the elevator and serving to prevent the passage of dirt from the shoe through the space normally presented between. the disk and the rear side of the elevator, said shield including a rigid intermediate shield section; a flex ible shield section secured at one end to one end of the rigid shield section and at the relatively opposite end to the rear side of said elevator, and a second flexible shield section secured at one edge thereof to the forward edge portion of the rigid shield section and having a free edge portion in hearing contact with the rear face of said disk, and a device mounted on the rigid shield section and bearing against the last-mem tioned flexible shield section for urging the lat- 'ter into yieldable hearing engagement with said disk.

4. An attachment as and for the purpose set forth in claim 3 and wherein said device consists of an arm pivoted intermediate its ends on the rigid shield section and having a free end bearing against the second-named flexible end shield section, and a spring anchored at one end to the rigid shield section and having a second end connected with said arm and normally urging said arm to Swing upwardly in a clockwise direction.

5. In an elevating road grading machine and in combination, front and rear sides for an elevator, a shoe extending between said sides, a disk mounted on the machine in operative position relative to said shoe intermediate said front and rear sides, a shield plate having at its lower edge a, flange, and bolt means securing said fiange to said shoe and at the desired adjustment intermediate said disk and said rear elevator sides.

6. In an elevating road grading machine and in combination, front and rear sides for an e1evator, a shoe extending between said sides, a disk mounted on the machine in operative position relative to said' shoe intermediate said front and rear sides, a shield plate having at its lower edge a fiange, bolt means securing said flange to said shoe and at the desired adjustment intermediate said disk and said rear elevator side, and a sheet of flexible material secured at one edge of said shield and at the relatively opposite edge to said rear elevator side.

7. In an elevating road grading machine and in combination, front and rear sides for an elevator, a shoe extending between said sides, a disk mounted on the machine in operative position relative to said shoe intermediate said front and rear sides, a shield p-late having at its lower edge a fiange, bolt means securing said flange to said shoe and at the desired adjustment intermediate said disk and said rear elevator side, and a sheet of flexible material secured at one edge to said shield and at the relatively opposite edge to said rear elevator side, and a second sheet of fiexible material Secured at one edge thereof to an edge portion of said. shield and having a free portion in Wiping engagement With one side of said disk, and means mounted on said shield and engaging the last-mentioned sheet for yieldably retaining said portion of the sheet in hearing contact With said disk.

ENDRE O. JOHNSON. 

